/**
 * General variables
 */
/**
 * General configs
 */
 * {
    box-sizing: border-box;
  }
  
  body {
    font-family: "Montserrat", sans-serif;
    font-size: 12px;
    line-height: 1em;
    margin: 0;
  }
  
  button {
    background-color: transparent;
    padding: 0;
    border: 0;
    outline: 0;
    cursor: pointer;
  }
  
  input {
    background-color: transparent;
    padding: 0;
    border: 0;
    outline: 0;
  }
  
  input[type="submit"] {
    cursor: pointer;
  }
  
  input::placeholder {
    font-size: .85rem;
    font-family: "Montserrat", sans-serif;
    font-weight: 300;
    letter-spacing: .1rem;
    color: #ccc;
  }
  
  /**
   * Bounce to the left side
   */
  @keyframes bounceLeft {
    0% {
      transform: translate3d(100%, -50%, 0);
    }
    50% {
      transform: translate3d(-30px, -50%, 0);
    }
    100% {
      transform: translate3d(0, -50%, 0);
    }
  }
  
  /**
   * Bounce to the left side
   */
  @keyframes bounceRight {
    0% {
      transform: translate3d(0, -50%, 0);
    }
    50% {
      transform: translate3d(calc(100% + 30px), -50%, 0);
    }
    100% {
      transform: translate3d(100%, -50%, 0);
    }
  }
  
  /**
   * Show Sign Up form
   */
  @keyframes showSignUp {
    100% {
      opacity: 1;
      visibility: visible;
      transform: translate3d(0, 0, 0);
    }
  }
  
  /**
   * Page background
   */
  .user {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
    background: #ccc;
    background-size: cover;
  }
  
  .user_options-container {
    position: relative;
    width: 43%;
  }
  
  .user_options-text {
    display: flex;
    justify-content: space-between;
    width: 100%;
    background-color: rgba(34, 34, 34, 0.85);
    border-radius: 3px;
  }
  
  /**
   * Registered and Unregistered user box and text
   */
  .user_options-registered,
  .user_options-unregistered {
    width: 50%;
    padding: 75px 45px;
    color: #fff;
    font-weight: 300;
  }
  
  .user_registered-title,
  .user_unregistered-title {
    margin-bottom: 15px;
    font-size: 1.66rem;
    line-height: 1em;
  }
  
  .user_unregistered-text,
  .user_registered-text {
    font-size: .83rem;
    line-height: 1.4em;
  }
  
  .user_registered-login,
  .user_unregistered-signup {
    margin-top: 30px;
    border: 1px solid #ccc;
    border-radius: 3px;
    padding: 10px 30px;
    color: #fff;
    text-transform: uppercase;
    line-height: 1em;
    letter-spacing: .2rem;
    transition: background-color .2s ease-in-out, color .2s ease-in-out;
  }
  
  .user_registered-login:hover,
  .user_unregistered-signup:hover {
    color: rgba(34, 34, 34, 0.85);
    background-color: #ccc;
  }
  
  /**
   * Login and signup forms
   */
  .user_options-forms {
    position: absolute;
    top: 50%;
    left: 30px;
    width: calc(50% - 30px);
    min-height: 420px;
    background-color: #fff;
    border-radius: 3px;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    transform: translate3d(100%, -50%, 0);
    transition: transform .4s ease-in-out;
  }

  .forms_fieldset {
    /**
     * 去除用户代理样式
     */
    border-width: 0;
    margin-inline-start: 0;
    margin-inline-end: 0;
    padding-inline-start: 0;
    padding-inline-end: 0;
    padding-block-start: 0;
    padding-block-end: 0;
  }
  
  .user_options-forms .user_forms-login {
    transition: opacity .4s ease-in-out, visibility .4s ease-in-out;
  }
  
  .user_options-forms .forms_title {
    margin-bottom: 45px;
    font-size: 1.5rem;
    font-weight: 500;
    line-height: 1em;
    text-transform: uppercase;
    color: #e8716d;
    letter-spacing: .1rem;
  }
  
  .user_options-forms .forms_field:not(:last-of-type) {
    margin-bottom: 20px;
  }
  
  .user_options-forms .forms_field-input {
    width: 100%;
    border-bottom: 1px solid #ccc;
    padding: 6px 20px 6px 6px;
    font-family: "Montserrat", sans-serif;
    font-size: 1rem;
    font-weight: 300;
    color: gray;
    letter-spacing: .1rem;
    transition: border-color .2s ease-in-out;
  }
  
  .user_options-forms .forms_field-input:focus {
    border-color: gray;
  }
  
  .user_options-forms .forms_buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 35px;
  }
  
  .user_options-forms .forms_buttons-forgot {
    font-family: "Montserrat", sans-serif;
    letter-spacing: .1rem;
    color: #ccc;
    text-decoration: underline;
    transition: color .2s ease-in-out;
  }
  
  .user_options-forms .forms_buttons-forgot:hover {
    color: #b3b3b3;
  }
  
  .user_options-forms .forms_buttons-action {
    background-color: #e8716d;
    border-radius: 3px;
    padding: 10px 35px;
    font-size: 1rem;
    font-family: "Montserrat", sans-serif;
    font-weight: 300;
    color: #fff;
    text-transform: uppercase;
    letter-spacing: .1rem;
    transition: background-color .2s ease-in-out;
  }
  
  .user_options-forms .forms_buttons-action:hover {
    background-color: #e14641;
  }
  
  .user_options-forms .user_forms-signup,
  .user_options-forms .user_forms-login {
    position: absolute;
    top: 70px;
    left: 40px;
    width: calc(100% - 80px);
    opacity: 0;
    visibility: hidden;
    transition: opacity .4s ease-in-out, visibility .4s ease-in-out, transform .5s ease-in-out;
  }
  
  .user_options-forms .user_forms-signup {
    transform: translate3d(120px, 0, 0);
  }
  
  .user_options-forms .user_forms-signup .forms_buttons {
    justify-content: flex-end;
  }
  
  .user_options-forms .user_forms-login {
    transform: translate3d(0, 0, 0);
    opacity: 1;
    visibility: visible;
  }
  
  /**
   * Triggers
   */
  .user_options-forms.bounceLeft {
    animation: bounceLeft 1s forwards;
  }
  
  .user_options-forms.bounceLeft .user_forms-signup {
    animation: showSignUp 1s forwards;
  }
  
  .user_options-forms.bounceLeft .user_forms-login {
    opacity: 0;
    visibility: hidden;
    transform: translate3d(-120px, 0, 0);
  }
  
  .user_options-forms.bounceRight {
    animation: bounceRight 1s forwards;
  }
  
  /**
   * Responsive 990px
   */
  @media screen and (max-width: 990px) {
    .user_options-container{
      width: 80%;
    }

    .user_options-forms {
      min-height: 450px;
    }
    .user_options-forms .forms_buttons {
      flex-direction: column;
    }
    .user_options-forms .user_forms-login .forms_buttons-action {
      margin-top: 30px;
    }
    .user_options-forms .user_forms-signup,
  .user_options-forms .user_forms-login {
      top: 40px;
    }
    .user_options-registered,
  .user_options-unregistered {
      padding: 115px 45px;
    }
  }
  

 